The story is about a family living in a flat with extreme low ceiling to cram as many people as possible in a building and due to that the building material is trash. It is not possible to stand upright. Each person has to acquire a specific quota consumption goods each day to keep the economy balanced. Work is minimal and consists of overseeing automated production. Going for a day on the beach you have to drive through a tunnel. To "cull" population sometimes a lane in the tunnel is closed of and filled with cyanide.
It was written originally in English but I read it in Swedish translation around 1960.